3Pf.01 Know that forces can be measured with a forcemeter.
3Pf.03 Know that friction is a force created between surfaces when they move against each other and it makes this movement harder.
3Pf.04 Describe how smooth and rough surfaces can generate different amounts of friction.
Activities in the module:
PSPRB1YS439-How to measure force?
PSPRB1YS441-Compare friction on various surfaces